Ricoh C2000 Service Manual page 109

4. Service Tables
Range:
0 to 120 s (00h to 78h)
FFh - The local NCU parameter factory setting is used.
Do not program a value between 79h and FEh.
Switch 01
No
Tx level
Bit4
4
0
0
0
0-4
0
0
0
1
Cable equalizer
Bit 7: 0, Bit 6: 0, Bit 5: 0 = None
Bit 7: 0, Bit 6: 0, Bit 5: 1 = Low
5-7
Bit 7: 0, Bit 6: 1, Bit 5: 0 = Medium
Bit 7: 0, Bit 6: 1, Bit 5: 1 = High
Bit 7: 1, Bit 6: 1, Bit 5: 1 = Disabled
108
FUNCTION
Bit3 Bit2 Bit1 Bit0
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
1 1 1 1
1 1 1 1
If communication with a particular remote
0
terminal often contains errors, the signal
level may be inappropriate. Adjust the Tx
–1
level for communications with that terminal
until the results are better.
–2
If the setting is "Disabled", the NCU
–3
parameter 01 setting is used.
–4
• Do not use settings other than listed on
the left.
–15
Disabled
Use a higher setting if there is signal loss at
higher frequencies because of the length of
wire between the modem and the telephone
exchange when calling the number stored
in this Quick/Speed Dial.
Also, try using the cable equalizer if one or
more of the following symptoms occurs.
Communication error with error codes such
as 0-20, 0-23, etc.
Modem rate fallback occurs frequently.
• Do not use settings other than listed on
the left.
COMMENTS